Protective Fail-Safe Circuitry

Those working with explosive devices can have peace of mind with the Alpha 4314’s redundant fail-safe limiting circuitry that physically prohibits accidental ignition in the event of equipment failure.

9 Test Ranges

Select 4 of 9 test ranges when you order, giving you the ultimate in flexibility no matter what your application

4-Wire Kelvin Inputs

Never worry about lead wire length or contact resistance errors requiring redundant calculations with the Alpha 4314’s 4-wire Kelvin inputs.

Battery-Powered Portability

The Alpha 4314 is powered by high-capacity rechargeable batteries, enabling true portability and enhancing intrinsic safety. Continuous isolated AC power is available as an alternative (Option AC-115).

US Military-Approved

The Alpha 4314 has been approved by the Department of Defense and all branches of the armed services, including special projects use (i.e. Cruise Missle).

Export Data to PC/Printer/Recorder

You can configure your instrument with a BCD or RS-232 interface which enables the Alpha 4314 to communicate data with other devices.

Designed with Fail-Safe Circuitry

Countless critical military, aerospace, and industrial applications utilize squibs and other blasting agents, and it is vital that these devices detonate precisely when required – not sooner, not later, not while testing for continuity integrity. To guarantee both the readiness of the device and the safety of the technician or engineer, the Alpha 4314 is equipped with redundant, dual fail-safe, current-limiting network circuitry that ensures instrument test currents cannot exceed the specified amount.

Even in the unlikely event of a worst case component failure, the output current limiting network is still in effect.

To certify that this level of safety is included in your instrument, we simulate a worst-case component failure during final testing and include the resulting recorded output current flow with your order.

Government and Military Approved

The 4314 series’ circuitry has been reviewed and approved by a U.S. Government Safety Board and all branches of our armed forces for specific military programs (i.e. Cruise Missile).

4-Wire Accuracy

The Alpha 4314 KRC utilizes a four-wire Kelvin input configuration to eliminate lead wire length and lead contact resistance errors.

Battery or Isolated AC Power

The units are battery powered with a heavy duty rechargeable NiMH (10Ah) pack for portability and line isolation purposes. An AC adaptor battery charger is standard.

Automatic Power Control

The Alpha 4314’s internal switching configuration automatically disables the battery charging circuit when in operate mode and removes all power from the output circuitry when in off/charging mode.

EWR Drop-Test Compliant

Compliant To The Eastern And Western Range (Ewr) 127-1 Range Safety Requirements For Drop Test, including that “These devices shall be analyzed to verify that rough handling, dropping, or single component failure will not result in negating the current-limiting feature.”

Ranges, Resolution, and Accuracy

While standard version of the Alpha 4314 features 20, 200, 2k, and 20k Ohm ranges, it can be configured to meet your needs. The table below lists the nine possible ranges that can be installed in the Alpha 4314 KRC. When ordering, simply specify the four range numbers you want to be installed in your instrument. The 20MΩ and 100MΩ ranges are only available on the standard current configuration.

Rng #

Range

Resolution

Test Current

Fail-Safe Current

Test Current

Fail-Safe Current

Accuracy

0

2Ω

100µΩ

10mA

16mA

5mA

8mA

± 0.03% of reading ± 0.02% of range

1

20Ω

1mΩ

10mA

16mA

5mA

8mA

± 0.03% of reading ± 0.02% of range

2

200Ω

10mΩ

1mA

1.8mA

500μA

1.8mA

± 0.03% of reading ± 0.02% of range

3

2kΩ

100mΩ

100μA

180μA

50μA

180μA

± 0.03% of reading ± 0.02% of range

4

20kΩ

1Ω

10μA

18μA

5μA

18μA

± 0.03% of reading ± 0.02% of range

5

200kΩ

10Ω

1μA

1.8μA

500nA

1.8μA

± 0.05% of reading ± 0.05% of range

6

2MΩ

100Ω

100nA

180nA

50nA

180nA

± 1% of reading ± 0.2% of range

7

20MΩ

1kΩ

10nA

18nA

n/a

n/a

± 2% of reading ± 0.2% of range

8

200MΩ

10kΩ

1nA

1.8nA

n/a

n/a

± 3% of reading ± 1% of range

Alpha 4314

Alpha 4314 KRC Reduced

Options

The options below enhance and expand the capabilities of the Alpha 4314 and can be selected when purchasing.

RS-232 Serial Interface Capability

The interface is isolated to 2.5kV on both power and Data lines and uses iCoupler Technology. Option RS-232 provides a safe way to communicate with the Alpha 4314 via a computer or PLC and allows the transfer of single readings or continuous transmission of data. This interface is for data acquisition only and does not provide range control. See Datasheet for more details.

BCD Capability

For applications requiring data output the Alpha 4314 is available with “BCD.” Notice that the BCD Option does not interfere or change the FailSafe feature of the instrument.

Carrying Case for the meter with room for the battery charger and Lead Sets

AC-115

Continuous Isolated AC Power

HCC

Pelican 1500 Hard Carrying Case with Custom Foam for the meter, battery charger, up to 3 sets of leads and extra batteries.

AF-6

100/6

R4

Standard 19″ equipment rack adaptor

Ranges, Resolution, and Accuracy

While standard version of the Alpha 4314 features 20, 200, 2k, and 20k Ohm ranges, it can be configured to meet your needs. The table below lists the nine possible ranges that can be installed in the Alpha 4314 KRC. When ordering, simply specify the four range numbers you want to be installed in your instrument. The 20MΩ and 100MΩ ranges are only available on the standard current configuration.